COMFORTABLE Molded foam material cradles the hips and tailbone conforms to body contours RECOMMENDED The Body Sport Ring Cushions innovative design is recommended by orthopedic doctors for use by patients with injuries to the coccyx PREVENTIVE This ring cushions stabilizing design helps prevent strains to the hip and to the back and is also useful for preventing back injuries in elderly and disabled patients REHABILITATIVE This medical ring cushion provides stability to the back and hips contributing to rehabilitation recovery and relieving hemorrhoids HYGIENIC Cotton polyester cover can be removed and washed as needed